jacaetevha

The population count function is used in many different scenarios. I first found out about it in the implementation of a HAMT data structure (Hash Array Mapped Trie).

The implementations herein are converted to Ruby from the C functions in this article. MRI is generally faster at these implementations than JRuby, but JRuby shines when any of these functions are called frequently enough to be able to inline the functions.

Platform information

OS	Yosemite 10.10.4
Machine	MacBook Pro (13-inch, Late 2011)
Processor	2.4 GHz Intel Core i5
Memory	16 GB 1333 MHz DDR3

jacaetevha

#!/usr/bin/env bash
# some magic to find out the real location of this script dealing with symlinks
DIR=`readlink "$0"` || DIR="$0";
DIR=`dirname "$DIR"`;
cd "$DIR"
DIR=`pwd`
cd - > /dev/null 
# disable parameter expansion to forward all arguments unprocessed to the VM
set -f
if [[ "$1" = "*.image" ]]; then

jacaetevha

#!/bin/sh

input=

while true
do

input="$(/usr/bin/osascript 2>/dev/null <<-__HEREDOC__
   with timeout of 300 seconds
      tell application "System Events"

jacaetevha

jacaetevha

<link rel="import" href="../topeka-elements/topeka-datasource.html">
<link rel="import" href="../topeka-elements/theme.html">
<link rel="import" href="../topeka-elements/topeka-resources.html">
<link rel="import" href="../topeka-elements/topeka-app.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {

jacaetevha

#!/usr/bin/env ruby

require 'open-uri'
require "rexml/document"

TOKEN   = ENV['TOKEN']   || '****'
PROJECT = ENV['PROJECT'] || '****'
STORY   = ENV['STORY']   || ARGV[0]

# ripped from Rails

jacaetevha

// XORCipher - Super simple encryption using XOR and Base64
//
// Depends on [Underscore](http://underscorejs.org/).
//
// As a warning, this is **not** a secure encryption algorythm. It uses a very
// simplistic keystore and will be easy to crack.
//
// The Base64 algorythm is a modification of the one used in phpjs.org
// * http://phpjs.org/functions/base64_encode/
// * http://phpjs.org/functions/base64_decode/

jacaetevha

#!/bin/bash

cat <<HERE > `pwd`/package.json
{
  "dependencies": {
    "underscore": "*"
  },
  "devDependencies": {
    "jasmine-node": "*"
  }

jacaetevha

# This script creates blocks of text on 8.5x11 paper that is suitable for
# cutting and pasting onto 5x7 index cards. The blocks of text are descriptions
# of your Rails database tables. Specifically, it prints out a representation
# of the column type next to the name of a column for each table.
#
# It attempts to layout cards smartly so that large tables are handled with
# some gracefulness. For instance, this script was tested with tables that
# have as few as 3 columns and tables up to 134 columns. If a table has more
# columns in it than can be easily represented on one 5x7 index card, it will
# use a full 8.5x11 page.

jacaetevha

#!/bin/bash

# ---------------
# Example output:
# ---------------
#       Dyno      Count  % of Total
# app[web.1]        103      14.33%
# app[web.2]        140      19.47%
# app[web.3]        111      15.44%
# app[web.4]        111      15.44%